I am stumped... what is 10K? Is it 10xk or is k the unit's digit of the number 10k?
Do you mean 10^k
If it is 10^k, then the answer D makes sense and here's how.
= 2x5x10x15x20x (prod of the rest)
= 10 x 10 x 5x3 x 5x4 x P
= 10 x 10 x 10 x 10 x 3xP
= 10^4 xP'
Therefore k max value is 4.
Yea this approach is right, you just need to collect all the 2x5 and see how many 10s you get in the product
I believe its yogurt!